PI3VT3245-A Datasheet, PDF (3/5 Pages) Pericom Semiconductor Corporation – 8-Bit, 2-Port, Low Voltage Translator Bus Switch

PI3VT3245-A
8-Bit, 2-Port, Low Voltage
Translator Bus Switch
Power Supply Characteristics
Parameters
Description
Test Conditions⁽¹⁾
Min. Typ.⁽²⁾
I_CC
∆I_CC
Quiescent Power Supply Current
Quiescent Current per Input HIGH
V_CC = Max.
V_IN = GND or V_CC
V_IN = 3V⁽³⁾
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at V_CC = 3.3V, +25°C ambient.
3. Per driven input (control input only); A and B pins do not contribute to ΔI_CC.
Max.
3
50
Units
µA
Switching Characteristics over 3.3V ±0.3V Operating Range
Parameters
Description
Conditions⁽¹⁾
t_PLH
t_PHL
Propogation Delay^(2,3) Ax to Bx
t_PZH
t_PZL
Enable Time BE to Ax or Bx
t_PHZ
t_PLZ
Disable Time BE to Ax or Bx
C_L = 50pF,
R_L = 500Ω
C_L = 50pF,
R_L = 500Ω,
R = 500Ω
Com.
Min. Max.
0.25
Units
1.5
9.8
ns
1.5
8.3
Switching Characteristics over 2.5V ±0.2V Operating Range
Parameters
Description
Conditions⁽¹⁾
Com.
Min. Max.
Units
t_PLH
t_PHL
Propogation Delay^(2,3) Ax to Bx
C_L = 50pF,
R_L = 500Ω
0.25
t_PZH
t_PZL
Enable Time BE to Ax or Bx
t_PHZ
t_PLZ
Disable Time BE to Ax or Bx
C_L = 50pF,
R_L = 500Ω,
R = 500Ω
1.5
9.8
ns
1.5
8.3
Notes:
1. See test circuit and waveforms.
2. This parameter is guaranteed but not tested on Propagation Delays.
3. The bus switch contributes no propagational delay other than the RC delay of the On-Resistance of the switch and the load capacitance. The
time constant for the switch alone is of the order of 0.25ns for 50pF load. Since this time constant is much smaller than the rise/fall times of
typical driving signals, it adds very little propagational delay to the system. Propagational delay of the bus switch when used in a system is
determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side.
12-0245
3
10/04/11